*flops* ok done i think https://computerfairi.es/media/5iqLYbljNzbGKlrVj0E

@squirrel
I like that routing. I'm no professional tho

@waweic i'm just kinda sad about the large amount of vias it has! i'm trying to do it by hand at first to minimize, then let the autorouter handle whichever ones i couldn't myself https://computerfairi.es/media/DN3J8_ngOsW7x7_sIDE

@noelle it's an old project of mine (same schematic as the "ratsnest" picture i posted yesterday), it's basically a bus expander to address all 19 address lines on the 4Mbit EEPROM plus 8 data lines

@noelle (and what this lets me do is have a cheap arduino-based EEPROM writer)

@squirrel and also what are the octal flip flops for? latching a single block of data at a time?

@er1n using 8 lines from a MCU to address 19+8 lines at once

@er1n @MightyPork@dev.glitch.social cheap EEPROM writer https://github.com/Lana-chan/EEPROMDate/

i use this to write master system flash cartridges

@squirrel @MightyPork ahhhh so you set pins, latch, set pins, latch, set pins, latch

@MightyPork @squirrel instead of using, like, shift registers

@er1n @MightyPork@dev.glitch.social shift registers are too slow! the flip flop work faster to comply with the timing required by the EEPROM's writing specs

@MightyPork@dev.glitch.social @er1n honestly if i didn't want to support random access i could just use a counter and clock it every page ... but this was the original design from 2 years ago

@squirrel @MightyPork ahhhhhhh that makes sense!!